Discovery 2 - Module 1

1
Which two things can be determined by using the ping command? (Choose two.)

the number of routers between the source and destination device
the IP address of the router nearest the destination device
the average time it takes a packet to reach the destination and for the response to return to the source 
whether or not the destination device is reachable through the network 
the average time it takes each router in the path between source and destination to respond




2
Which ISP network support systems team will typically contact the customer
once a new circuit is ready and guide the customer in setting up passwords
and other account information?

 help desk 
customer service
network operations center
on-site installation team
planning and provisioning




3
What are three main types of high-bandwidth connection options used
by medium- to large-sized businesses? (Choose three.)

DSL
cable modem
Ethernet
 metro Ethernet 
 T1 
 T3 




4
Which of the following start the test of destination reachability?

echo request issued by source 
echo reply issued by source
echo request issued by destination
echo reply issued by destination




5
Which statement describes a function of a Tier 1 ISP?

peers with other similarly sized ISPs to form the global Internet backbone 
uses the services of Tier 3 ISPs to connect to the global Internet backbone
pays Tier 2 ISPs for transit services to connect across continents
limits the offered services to small geographic areas




6
At which point do individuals and small businesses connect directly to the ISP network
to obtain Internet access?

 at a POP 
at an IXP
at a Metro Ethernet link
on the ISP extranet




7
What information is contained in the numbered RFCs maintained by the IETF?

the rules for acceptable use of websites and e-mail
the descriptions of various hardware components that connect to the Internet
the specifications and rules for how devices communicate over an IP network 
the standards for cabling and wiring for local Ethernet networks




8
Which network support services team is responsible for testing
a new customer connection and for monitoring the ongoing operation of the link?"

customer service
help desk
 network operations  
on-site installation




9
Which network support services team identifies whether
the client site has existing network hardware and circuits installed?

customer service
help desk
network operations
 planning and provisioning 




10
What was the original purpose of the Internet?

voice communication
marketing
research 
commerce




11
What is the purpose of an RFC?

to provide the connection point for multiple ISPs to the Internet
to document the development and approval of an Internet standard 
to connect a business to an ISP
to provide data communication services to ISP customers
to monitor network performance and connection status of ISP clients




12
Which command generated this output?

1 12.0.0.2 4 msec 4 msec 4 msec
2 23.0.0.3 20 msec 16 msec 16 msec
3 34.0.0.4 16 msec 18 msec 16 msec

 Router# traceroute 34.0.0.4 
Router# nslookup 34.0.0.4
Router# ping 34.0.0.4
Router# telnet 34.0.0.4




13
Which network utility helps determine the
location of network problems and identifies
routers that packets travel across?

ping
ipconfig
traceroute 
ixp




14
What interconnects the Internet backbone?

gateway routers
 IXPs 
POPs
satellite dishes




15
What feature allows network devices to be scalable?

a fixed number of interfaces
ease of repair
 modularity 
low maintenance requirements
low cost

16
The IT manager of a medium-sized business wishes to house the
company-owned web servers in a facility that offers round-the-clock
controlled access, redundant power, and
high-bandwidth Internet access. Which ISP service will fulfill this need?

web hosting
planning and provisioning
application hosting
 equipment colocation 
Tier 1 ISP services




17
When did the Internet become available for use by
businesses and consumers?

1979
1984
 1991 
1999
2000




18
What units are used to measure Internet bandwidth?

bits per second
bytes per second
hertz
 megabytes per second 
packets per second




19
What is the maximum T1 transmission speed?

56 kbps
128 kbps
 1.544 Mbps 
2.4 Mbps




20
What three support service teams are commonly found
within an ISP? (Choose three.)

help desk 
computer support
application readiness
 network operations center
planning and provisioning 
implementation and documentation

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